I stopped reading right there because I was also labeled a scammer once for arguably no good reason and I am one of the most productive members of the forum now. I don't know TerryTibbs but when I see a scammer tag, I just say "What now?".
You were labeled a scammer because you scammed someone. It was removed because you paid them back.
Terrytibbs scammed someone and has not paid them back. He has a scammer tag so that other traders are warned about this incident. Initially I was opposed to reacting to scammers at all, but I decided that if scammer accounts were not somehow marked, almost everyone would feel that the forum had neglected its responsibility to traders. (Most forums would ban scammers outright.)
The amount of time elapsed since terrytibbs' conflict and the quality of his posts are not relevant: he still scammed someone in the past and has not paid them back.